<template>
    <div>
        <div class="search">
            <input v-model="keyword" type="text" class="search-input" placeholder="输入城市名或拼音">
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul> 
                <li class="search-item border-bottom" v-for="item in list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
                <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
            </ul>
        </div>
    </div>
</template>
<script>
import BScroll from '@better-scroll/core'
import {mapMutations} from 'vuex'
export default {
    name:'CitySearch',
    data () {
        return {
            keyword:'',
            list:[],
            timer:null
        }
    },
    props:{
        citiesList:Object
    },
    computed:{
        hasNoData () {
            return !this.list.length
        }
    },
    watch:{
        keyword () {
            if(this.timer){
                clearTimeout(this.timer)
            }
            if (!this.keyword){
               this.list = []
               return     
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.citiesList){
                    this.citiesList[i].forEach((value) => {
                        if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
                            result.push(value)
                        }
                    })
                }
                this.list = result
            },100)
        }
    },
    methods:{
        handleCityClick (city) {
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations([
            'changeCity'
        ])
    },
    updated () {
        this.scroll = new BScroll(this.$refs.search,{click:true})
    }
}
</script>
<style lang="stylus" scoped>
    .search
        height:0.62rem
        padding:.1rem
        background-color: #00bcd4
        .search-input
            box-sizing:border-box
            width:100% 
            height:.62rem 
            line-height:.62rem 
            text-align:center
            border-radius:.06rem
            color:#666
            padding:0 .1rem
    .search-content
        position:absolute
        overflow:hidden
        z-index:1
        left:0
        right:0
        bottom:0
        top:1.5rem
        background-color:#fff
        .search-item
            line-height:.62rem 
            background-color:#fff
            color:#666

</style>
